Camera optical lens

ABSTRACT

The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: an aperture; a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a negative refractive power; a fourth lens having a positive refractive power; a fifth lens having a negative refractive power; and a sixth lens having a negative refractive power. The camera optical lens satisfies following conditions: 1.09≤n4/n1≤1.30; and −2.00≤(R1+R2)/(R1−R2)≤−1.50, where n1 denotes a refractive index of the first lens; n4 denotes a refractive index of the fourth lens; R1 denotes a curvature radius of an object side surface of the first lens; and R2 denotes a curvature radius of an image side surface of the first lens.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and moreparticularly, to a camera optical lens suitable for handheld terminaldevices such as smart phones or digital cameras and camera devices suchas monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lenses with good imaging quality therefore have become amainstream in the market.

In order to obtain better imaging quality, the lens that istraditionally equipped in mobile phone cameras adopts a three-piece orfour-piece lens structure, or even a five-piece structure. Also, withthe development of technology and the increase of the diverse demands ofusers, and as the pixel area of photosensitive devices is becomingsmaller and smaller and the requirement of the system on the imagingquality is improving constantly, a six-piece lens structure graduallyappears in lens designs. Although the common six-piece lens has goodoptical performance, its settings on refractive power, lens spacing andlens shape still have some irrationality, which results in that the lensstructure cannot achieve a high optical performance while satisfyingdesign requirements for wide-angle and ultra-thin lenses having a bigaperture.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9;

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9;

FIG. 13 is a schematic diagram of a structure of a camera optical lensin accordance with Embodiment 4 of the present disclosure;

FIG. 14 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 13;

FIG. 15 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 13; and

FIG. 16 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 13.

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

Referring to FIG. 1, the present disclosure provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment1 of the present disclosure. The camera optical lens 10 includes 6lenses. Specifically, the camera optical lens 10 includes, from anobject side to an image side, an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixthlens L6. An optical element such as a glass plate GF can be arrangedbetween the sixth lens L6 and an image plane S1. The glass plate GF canbe a glass cover plate or an optical filter. In other embodiments, theglass plate GF can be arranged at other positions.

In present embodiment, the first lens L1 has a positive refractivepower, and has an object side surface being a convex surface and animage object surface being a concave surface; the second lens L2 has anegative refractive power, and has an object side surface being a convexsurface and an image object surface being a concave surface; the thirdlens L3 has a negative refractive power, and has an object side surfacebeing a convex surface and an image object surface being a concavesurface; the fourth lens L4 has a positive refractive power, and has anobject side surface being a concave surface and an image object surfacebeing a convex surface; the fifth lens L5 has a negative refractivepower, and has an object side surface being a concave surface and animage object surface being a convex surface; and a sixth lens L6 has anegative refractive power, and has an object side surface being a convexsurface and an image object surface being a concave surface.

Here, a refractive index of the first lens L1 is defined as n1, and arefractive index of the fourth lens L4 is defined as n4. The cameraoptical lens 10 should satisfy a following condition:

1.09≤n4/n1≤1.30  (1).

Herein, a curvature radius of the object side surface of the first lensL1 is defined as R1, and a curvature radius of the image side surface ofthe first lens L1 is defined as R2. The camera optical lens 10 shouldsatisfy a following condition:

−2.00≤(R1+R2)/(R1−R2)≤−1.50  (2).

The condition (1) specifies a ratio of the refractive indices of thefirst lens L1 and the fourth lens L4. This can facilitate correction ofaberrations while achieving ultra-thin lenses.

The condition (2) specifies a shape of the first lens L1. This caneffectively correct spherical aberrations of the camera optical lens.

In this embodiment, with the above configurations of the lensesincluding respective lenses (L1, L2, L3, L4, L5 and L6) having differentrefractive powers, the shape of the first lens L1 is specified and theratio of the refractive indices of the first lens L1 and the fourth lensL4 is specified, thereby facilitating correction of aberrations of thecamera optical lens. This can achieve a high optical performance whilesatisfying design requirements for wide-angle and ultra-thin lenseshaving a big aperture.

In an example, a curvature radius of the object side surface of thethird lens L3 is defined as R5, and a curvature radius of the image sidesurface of the third lens L3 is defined as R6. The camera optical lens10 should satisfy a following condition:

30.00≤(R5+R6)/(R5−R6)≤50.00  (3).

The condition (3) specifies a shape of the third lens L3. This can avoidbad shaping and generation of stress due to the overly big surfacecurvature of the third lens L3, thereby facilitating shaping of thethird lens L3.

In an example, an on-axis distance from the image side surface of thethird lens L3 to the object side surface of the fourth lens L4 isdefined as d6, and an on-axis distance from the image side surface ofthe fourth lens L4 to the object side surface of the fifth lens L5 isdefined as d8. The camera optical lens 10 should satisfy a followingcondition:

1.10≤d6/d8≤1.40  (4).

The condition (4) specifies a ratio of the on-axis distance from theimage side surface of the third lens L3 to the object side surface ofthe fourth lens L4 and the on-axis distance from the image side surfaceof the fourth lens L4 to the object side surface of the fifth lens L5.This can facilitate reducing a total length of the camera optical lenswhile achieving ultra-thin lenses.

In an example, a focal length of the camera optical lens is defined asf, and a focal length of the fifth lens L5 is defined as f5. The cameraoptical lens 10 should satisfy a following condition:

−3.00≤f5/f≤−1.50  (5).

The condition (5) specifies a ratio of the focal length of the fifthlens L5 and the focal length of the camera optical lens. This leads to abetter imaging quality and a lower sensitivity.

In addition, a surface of a lens can be set as an aspherical surface.The aspherical surface can be easily formed into a shape other than thespherical surface, so that more control variables can be obtained toreduce the aberration, thereby reducing the number of lenses and thuseffectively reducing a total length of the camera optical lens accordingto the present disclosure. In an embodiment of the present disclosure,both an object side surface and an image side surface of each lens areaspherical surfaces.

It should be noted that the first lens L1, the second lens L2, the thirdlens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6that constitute the camera optical lens 10 of the present embodimenthave the structure and parameter relationships as described above, andtherefore, the camera optical lens 10 can reasonably distribute therefractive power, the surface shape, the on-axis thickness and the likeof each lens, and thus correct various aberrations. A total opticallength from the object side surface of the first lens to an image planeof the camera optical lens along an optic axis (TTL) and an image height(IH) of the camera optical lens 10 satisfy a condition of TTL/IH≤1.24.The field of view (FOV) of the camera optical lens 10 satisfies FOV≥84degrees. This can achieve a high optical performance while satisfyingdesign requirements for wide-angle and ultra-thin lenses having a bigaperture.

In an example, inflexion points and/or arrest points can be arranged onthe object side surface and/or image side surface of the lens, so as tosatisfy the demand for the high quality imaging. The description belowcan be referred to for specific implementations.

FIG. 1 is a schematic diagram of a structure of the camera optical lens10 in accordance with Embodiment 1 of the present disclosure. The designinformation of the camera optical lens 10 in Embodiment 1 of the presentdisclosure is shown in the following.

Table 1 lists curvature radiuses of object side surfaces and images sidesurfaces of the first lens L1 to the sixth lens L6 constituting thecamera optical lens 10, on-axis thicknesses of the lenses, distancesbetween the lenses, the refractive index nd and the abbe number vdaccording to Embodiment 1 of the present disclosure. Table 2 shows coniccoefficients k and aspheric surface coefficients. It should be notedthat each of the distance, radii and the central thickness is in a unitof millimeter (mm).

TABLE 1 R d nd vd S1 ∞ d0 = −0.314 R1 1.216 d1 = 0.563 nd1 1.5444 v155.82 R2 3.701 d2 = 0.059 R3 211.500 d3 = 0.210 nd2 1.6610 v2 20.53 R47.659 d4 = 0.300 R5 4.590 d5 = 0.234 nd3 1.6610 v3 20.53 R6 4.375 d6 =0.411 R7 −3.810 d7 = 0.338 nd4 1.7504 v4 44.94 R8 −1.710 d8 = 0.320 R9−3.481 d9 = 0.290 nd5 1.5444 v5 55.82 R10 −24.797 d10 =  0.154 R11 5.497d11 =  0.340 nd6 1.5346 v6 55.69 R12 1.560 d12 =  0.480 R13 ∞ d13 = 0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 =  0.122

In the table, meanings of various symbols will be described as follows.

R: curvature radius of an optical surface;

S1: aperture;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the sixth lens L6;

R12: curvature radius of the image side surface of the sixth lens L6;

R13: curvature radius of an object side surface of the glass plate GF;

R14: curvature radius of an image side surface of the glass plate GF;

d: on-axis thickness of a lens or an on-axis distance between adjacentlenses;

d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 tothe object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 tothe object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5to the object side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image side surface of the sixth lens L6to the object side surface of the glass plate GF;

d13: on-axis thickness of the glass plate GF;

d14: on-axis distance from the image side surface of the glass plate GFto the image plane Si;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

ndg: refractive index of d line of the glass plate GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the glass plate GF.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10R1 −9.3814E+00 6.0639E−01 −1.1464E+00 2.1474E+00 −2.3671E+00 R2−6.6199E+00 −2.0881E−01 2.9312E−02 1.0004E−01 6.6185E−01 R3 9.0349E+01−2.1025E−01 3.4968E−01 7.5544E−01 −1.3382E+00 R4 3.5460E+01 −3.6044E−022.9743E−01 1.6175E+00 −4.1846E+00 R5 6.7416E−01 −2.3035E−01 −2.8495E−012.7311E+00 −1.1725E+01 R6 −4.0050E+00 −1.5717E−01 −1.3191E−01 5.0783E−01−8.8458E−01 R7 −5.9378E−01 −2.1408E−02 −3.3823E−02 3.5993E−02 1.9175E−02R8 −1.4506E+01 −3.3181E−01 6.2231E−01 −9.5599E−01 1.0101E+00 R96.3802E−01 −3.3057E−02 7.4447E−04 1.1030E−03 2.1877E−04 R10 9.0065E+01−7.3923E−02 6.9212E−03 9.6837E−04 −6.3355E−04 R11 −3.9722E+02−3.4471E−01 1.9690E−01 −5.5351E−02 7.9880E−03 R12 −1.7280E+01−1.5404E−01 6.7067E−02 −1.7901E−02 2.6077E−03 Aspherical surfacecoefficients A12 A14 A16 A18 A20 R1 −5.7911E−01 6.3050E+00 −9.3556E+005.9640E+00 −1.4646E+00 R2 −1.2042E+00 −4.4796E−01 8.3191E−01 6.8722E−01−5.9713E−01 R3 −3.8473E+00 1.9898E+01 −3.7192E+01 3.3186E+01 −1.1438E+01R4 −6.0256E+00 5.2910E+01 −1.1507E+02 1.1346E+02 −4.2449E+01 R52.4296E+01 −1.4103E+01 −3.2343E+01 5.9852E+01 −2.9575E+01 R6 5.6185E−013.3756E−01 −5.1639E−01 1.2658E−01 1.6498E−02 R7 −2.2310E−02 −2.5602E−028.8406E−03 1 1931E−02 −4.5159E−03 R8 −5.0618E−01 −8.7945E−03 1.2170E−01−4.8530E−02 6.2151E−03 R9 −1.3627E−06 −1.4237E−05 −4.4054E−06−2.5024E−07 6.4511E−07 R10 −1.2662E−04 1.3253E−05 9.0414E−06 1.5153E−06−3.6536E−07 R11 −8.2028E−05 −2.0184E−04 3.9755E−05 −3.4589E−061.1836E−07 R12 −8.1225E−05 −3.5957E−05 3.8038E−06 2.4944E−07 −3.7111E−08

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14,A16, A18 and A20 are aspheric surface coefficients.

In the present embodiment, an aspheric surface of each lens surface usesthe aspheric surfaces shown in the above condition (6). However, thepresent disclosure is not limited to the aspherical polynomials formshown in the condition (6).

Y=(x ² /R)/{1+[1−(1+k)(x ² /R ²)]^(1/2) }+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x¹⁶ +A18x ¹⁸ +A20x ²⁰  (6).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 10 according toEmbodiment 1 of the present disclosure. P1R1 and P1R2 represent theobject side surface and the image side surface of the first lens L1,respectively, P2R1 and P2R2 represent the object side surface and theimage side surface of the second lens L2, respectively, P3R1 and P3R2represent the object side surface and the image side surface of thethird lens L3, respectively, P4R1 and P4R2 represent the object sidesurface and the image side surface of the fourth lens L4, respectively,P5R1 and P5R2 represent the object side surface and the image sidesurface of the fifth lens L5, respectively, and P6R1 and P6R2 representthe object side surface and the image side surface of the sixth lens L6,respectively. The data in the column named “inflexion point position”refers to vertical distances from inflexion points arranged on each lenssurface to the optic axis of the camera optical lens 10. The data in thecolumn named “arrest point position” refers to vertical distances fromarrest points arranged on each lens surface to the optic axis of thecamera optical lens 10.

TABLE 3 Number of Inflexion Inflexion Inflexion inflexion point pointpoint points position 1 position 2 position 3 P1R1 1 0.795 P1R2 1 0.335P2R1 2 0.045 0.435 P2R2 P3R1 1 0.285 P3R2 3 0.335 0.935 0.985 P4R1 11.205 P4R2 3 0.845 1.105 1.455 P5R1 1 1.605 P5R2 1 1.805 P6R1 3 0.1751.265 2.365 P6R2 3 0.385 2.215 2.515

TABLE 4 Number Arrest Arrest of arrest point point points position 1position 2 P1R1 P1R2 1 0.665 P2R1 2 0.075 0.555 P2R2 P3R1 1 0.485 P3R2 10.575 P4R1 P4R2 P5R1 P5R2 P6R1 2 0.305 2.225 P6R2 1 0.825

In addition, Table 17 below further lists various values of Embodiment 1and values corresponding to parameters which are specified in the aboveconditions.

FIG. 2 illustrates a longitudinal aberration of light with wavelengthsof 435 nm, 486 nm, 546 nm, 587 nm and 656 nm after passing the cameraoptical lens 10 according to Embodiment 1, and FIG. 3 illustrates alateral color of light with wavelengths of 435 nm, 486 nm, 546 nm, 587nm and 656 nm after passing the camera optical lens 10 according toEmbodiment 1. FIG. 4 illustrates a field curvature and a distortion oflight with a wavelength of 546 nm after passing the camera optical lens10 according to Embodiment 1, in which a field curvature S is a fieldcurvature in a sagittal direction and T is a field curvature in atangential direction.

In this embodiment, a full FOV of the camera optical lens is 2ω, and anF number is Fno, where 2ω=84.29° and Fno=2.00. Thus, the camera opticallens 10 can achieve a high imaging performance while satisfying designrequirements for wide-angle and ultra-thin lenses having a big aperture.

Embodiment 2

FIG. 5 is a schematic diagram of a structure of a camera optical lens 20in accordance with Embodiment 2 of the present disclosure. Embodiment 2is basically the same as Embodiment 1 and involves symbols having thesame meanings as Embodiment 1, and only differences therebetween will bedescribed in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd vd S1 ∞ d0 = −0.332 R1 1.213 d1 = 0.561 nd1 1.5444 v155.82 R2 3.663 d2 = 0.066 R3 −97.503 d3 = 0.216 nd2 1.6610 v2 20.53 R48.820 d4 = 0.284 R5 4.694 d5 = 0.231 nd3 1.6610 v3 20.53 R6 4.509 d6 =0.393 R7 −3.983 d7 = 0.349 nd4 1.6935 v4 53.20 R8 −1.736 d8 = 0.354 R9−3.422 d9 = 0.290 nd5 1.5444 v5 55.82 R10 −22.431 d10 = 0.154 R11 6.494d11 = 0.362 nd6 1.5346 v6 55.69 R12 1.704 d12 = 0.480 R13 ∞ d13 = 0.210ndg 1.5168 vg 64.17 R14 ∞ d14 = 0.080

TABLE 6 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10R1 −9.3136E+00 6.0860E−01 −1.1442E+00 2.1536E+00 −2.3569E+00 R2−5.2554E−01 −1.9488E−01 3.1533E−02 9.8407E−02 6.5431E−01 R3 −9.0007E+01−2.0563E−01 3.4832E−01 7.5164E−01 −1.3388E+00 R4 9.2142E−01 −4.8648E−023.1080E−01 1.6144E+00 −4.1941E+00 R5 2.5445E+00 −2.2314E−01 −2.9952E−012.7209E+00 −1.1708E+01 R6 −2.0764E+00 −1.5450E−01 −1.3313E−01 5.0687E−01−8.8471E−01 R7 −4.5452E−01 −2.1681E−02 −3.4509E−02 3.5760E−02 1.9143E−02R8 −1.4316E+01 −3.3023E−01 6.2304E−01 −9.5585E−01 1.0101E+00 R96.6913E−01 −3.3219E−02 6.3583E−04 1.0863E−03 2.1797E−04 R10 8.0052E+01−7.4165E−02 7.3042E−03 1.0672E−03 −6.2499E−04 R11 −4.0001E+02−3.4500E−01 1.9688E−01 −5.5349E−02 7.9884E−03 R12 −1.6971E+01−1.5463E−01 6.7046E−02 −1.7901E−02 2.6073E−03 Aspherical surfacecoefficients A12 A14 A16 A18 A20 R1 −5.6914E−01 6.3121E+00 −9.3539E+005.9581E+00 −1.4726E+00 R2 −1.2157E+00 −4.5253E−01 8.4871E−01 7.1553E−01−6.1123E−01 R3 −3.8492E+00 1.9892E+01 −3.7210E+01 3.3176E+01 −1.1379E+01R4 −6.0363E+00 5.2925E+01 −1.1500E+02 1.1355E+02 −4.2438E+01 R52.4334E+01 −1.4114E+01 −3.2423E+01 5.9793E+01 −2.9429E+01 R6 5.6208E−013.3774E−01 −5.1614E−01 1.2678E−01 1.6625E−02 R7 −2.2300E−02 −2.5584E−028.8599E−03 1.1940E−02 −4.5111E−03 R8 −5.0619E−01 −8.8059E−03 1.2169E−01−4.8533E−02 6.2143E−03 R9 −8.0941E−07 −1.3927E−05 −4.2779E−06−2.2745E−07 6.4422E−07 R10 −1.2611E−04 1.2948E−05 8.9066E−06 1.4879E−06−3.7730E−07 R11 −8.1908E−05 −2.0183E−04 3.9756E−05 −3.4591E−061.1824E−07 R12 −8.1250E−05 −3.5959E−05 3.8039E−06 2.4961E−07 −3.7063E−08

Table 7 and Table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20 according toEmbodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion Inflexion Inflexion Inflexion inflexionpoint point point point points position 1 position 2 position 3 position4 P1R1 1 0.805 P1R2 1 0.375 P2R1 1 0.435 P2R2 P3R1 1 0.285 P3R2 4 0.3350.915 1.005 1.105 P4R1 1 1.205 P4R2 3 0.835 1.115 1.475 P5R1 1 1.615P5R2 1 1.815 P6R1 3 0.175 1.275 2.365 P6R2 3 0.395 2.215 2.525

TABLE 8 Number Arrest Arrest of arrest point point points position 1position 2 P1R1 P1R2 1 0.725 P2R1 1 0.575 P2R2 P3R1 1 0.485 P3R2 1 0.575P4R1 P4R2 P5R1 P5R2 P6R1 2 0.295 2.225 P6R2 1 0.815

In addition, Table 17 below further lists various values of Embodiment 2and values corresponding to parameters which are specified in the aboveconditions.

FIG. 6 illustrates a longitudinal aberration of light with wavelengthsof 435 nm, 486 nm, 546 nm, 587 nm and 656 nm after passing the cameraoptical lens 10 according to Embodiment 2, and FIG. 7 illustrates alateral color of light with wavelengths of 435 nm, 486 nm, 546 nm, 587nm and 656 nm after passing the camera optical lens 10 according toEmbodiment 2. FIG. 8 illustrates a field curvature and a distortion oflight with a wavelength of 546 nm after passing the camera optical lens20 according to Embodiment 2, in which a field curvature S is a fieldcurvature in a sagittal direction and T is a field curvature in atangential direction.

In the camera optical lens 20 according to this embodiment, 2ω=84.22°and Fno=2.00. Thus, the camera optical lens 20 can achieve a highimaging performance while satisfying design requirements for wide-angleand ultra-thin lenses having a big aperture.

Embodiment 3

FIG. 9 is a schematic diagram of a structure of a camera optical lens 30in accordance with Embodiment 3 of the present disclosure. Embodiment 3is basically the same as Embodiment 1 and involves symbols having thesame meanings as Embodiment 1, and only differences therebetween will bedescribed in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd vd S1 ∞ d0 = −0.302 R1 1.226 d1 = 0.769 nd1 1.5444 v155.82 R2 6.061 d2 = 0.059 R3 −4.572 d3 = 0.210 nd2 1.6610 v2 20.53 R4−14.816 d4 = 0.232 R5 5.449 d5 = 0.281 nd3 1.6610 v3 20.53 R6 5.104 d6 =0.261 R7 −3.475 d7 = 0.260 nd4 2.0027 v4 19.32 R8 −3.446 d8 = 0.188 R910.637 d9 = 0.384 nd5 1.5444 v5 55.82 R10 3.664 d10 =  0.075 R11 1.487d11 =  0.482 nd6 1.5346 v6 55.69 R12 1.152 d12 =  0.480 R13 ∞ d13 = 0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 =  0.174

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 R1 −1.0149E+01 5.8623E−01 −1.1491E+00 2.1322E+00 −2.3768E+00 R2−2.3175E+01 −1.9025E−01 1.1485E−02 9.1120E−02 6.6702E−01 R3 −1.2867E+02−1.1526E−01 3.1500E−01 7.3950E−01 −1.3172E+00 R4 −3.4319E+02 8.5237E−023.0950E−01 1.5933E+00 −4.1486E+00 R5 −1.0701E+01 −2.2838E−01 −1.1476E−012.8303E+00 −1.1802E+01 R6 −1.2379E+02 −1.6504E−01 −8.5656E−02 5.8181E−01−8.7140E−01 R7 3.9517E+00 −7.7485E−02 −7.4798E−02 2.6899E−02 2.9914E−02R8 −1.0850E+02 −2.8438E−01 5.8076E−01 −9.7847E−01 1.0038E+00 R92.5175E+01 −1.9165E−02 −3.6237E−02 8.0145E−03 3.3803E−03 R10 −3.4900E+01−8.8694E−02 1.5227E−02 −7.1013E−04 −5.6282E−04 R11 −5.8124E+00−3.4894E−01 1.9602E−01 −5.5392E−02 7.9883E−03 R12 −5.5636E+00−1.4895E−01 6.7390E−02 −1.8021E−02 2.5875E−03 Aspherical surfacecoefficients A12 A14 A16 A18 A20 R1 −5.6128E−01 6.3400E+00 −9.3136E+005.9844E+00 −1.4925E+00 R2 −1.1844E+00 −4.1645E−01 8.6216E−01 6.7457E−01−7.0807E−01 R3 −3.8346E+00 1.9885E+01 −3.7206E+01 3.3149E+01 −1.1540E+01R4 −5.9608E+00 5.2731E+01 −1.1552E+02 1.1322E+02 −4.0415E+01 R52.3949E+01 −1.4386E+01 −3.1966E+01 6.0542E+01 −3.0384E+01 R6 5.3551E−012.7261E−01 −5.5280E−01 1.1779E−01 6.0459E−02 R7 −6.3329E−03 −8.9422E−031.7879E−02 1.0724E−02 −1.0362E−02 R8 −5.0586E−01 −7.1619E−03 1.2271E−01−4.8005E−02 6.5958E−03 R9 −6.4223E−04 −8.4339E−04 −3.4094E−04−1.2744E−05 8.0387E−05 R10 1.3603E−05 3.7700E−05 8.6317E−06 −1.8903E−07−8.8406E−07 R11 −8.1260E−05 −2.0165E−04 3.9765E−05 −3.4597E−061.1803E−07 R12 −8.2816E−05 −3.6014E−05 3.8177E−06 2.5320E−07 −3.6555E−08

Table 11 and Table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30 according toEmbodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion Inflexion inflexion point point pointsposition 1 position 2 P1R1 1 0.825 P1R2 1 0.265 P2R1 1 0.395 P2R2 10.205 P3R1 1 0.275 P3R2 1 0.255 P4R1 1 0.945 P4R2 1 1.145 P5R1 2 0.4851.495 P5R2 1 0.405 P6R1 2 0.365 1.315 P6R2 2 0.505 2.315

TABLE 12 Number Arrest of arrest point points position 1 P1R1 P1R2 10.485 P2R1 1 0.585 P2R2 1 0.315 P3R1 1 0.535 P3R2 1 0.465 P4R1 P4R2 P5R11 0.755 P5R2 1 0.755 P6R1 1 0.715 P6R2 1 1.215

In addition, Table 17 below further lists various values of Embodiment 3and values corresponding to parameters which are specified in the aboveconditions.

FIG. 10 illustrates a longitudinal aberration of light with wavelengthsof 435 nm, 486 nm, 546 nm, 587 nm and 656 nm after passing the cameraoptical lens 30 according to Embodiment 3, and FIG. 11 illustrates alateral color of light with wavelengths of 435 nm, 486 nm, 546 nm, 587nm and 656 nm after passing the camera optical lens 30 according toEmbodiment 3. FIG. 12 illustrates field curvature and distortion oflight with a wavelength of 546 nm after passing the camera optical lens30 according to Embodiment 3, in which a field curvature S is a fieldcurvature in a sagittal direction and T is a field curvature in atangential direction.

In the camera optical lens 30 according to this embodiment, 2ω=84.79°and Fno=2.00. Thus, the camera optical lens 30 can achieve a highimaging performance while satisfying design requirements for wide-angleand ultra-thin lenses having a big aperture.

Embodiment 4

FIG. 13 is a schematic diagram of a structure of a camera optical lens40 in accordance with Embodiment 4 of the present disclosure. Embodiment4 is basically the same as Embodiment 1 and involves symbols having thesame meanings as Embodiment 1, and only differences therebetween will bedescribed in the following.

Table 13 and Table 14 show design data of a camera optical lens 40 inEmbodiment 2 of the present disclosure.

TABLE 13 R d nd vd S1 ∞ d0 = −0.324 R1 1.223 d1 = 0.573 nd1 1.5444 v155.82 R2 3.748 d2 = 0.061 R3 −278.052 d3 = 0.210 nd2 1.6610 v2 20.53 R48.617 d4 = 0.300 R5 4.817 d5 = 0.238 nd3 1.6610 v3 20.53 R6 4.608 d6 =0.416 R7 −4.380 d7 = 0.334 nd4 1.7504 v4 44.94 R8 −1.729 d8 = 0.305 R9−2.917 d9 = 0.312 nd5 1.5444 v5 55.82 R10 −5606.205 d10 =  0.170 R115.129 d11 =  0.336 nd6 1.5346 v6 55.69 R12 1.539 d12 =  0.480 R13 ∞ d13=  0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 =  0.072

TABLE 14 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 R1 −9.4703E+00 6.0356E−01 −1.1475E+00 2.1507E+00 −2.3623E+00 R2−4.9928E+00 −2.0674E−01 2.7209E−02 9.6215E−02 6.6163E−01 R3 −4.0000E+02−2.1281E−01 3.4971E−01 7.5717E−01 −1.3403E+00 R4 3.2258E+01 −3.6553E−022.9719E−01 1.6051E+00 −4.1763E+00 R5 3.3814E+00 −2.2729E−01 −2.8349E−012.7340E+00 −1.1721E+01 R6 −3.1019E+00 −1.5664E−01 −1.3646E−01 5.0878E−01−8.8405E−01 R7 1.1553E+00 −2.5951E−02 −3.4157E−02 3.6056E−02 1.9210E−02R8 −1.4748E+01 −3.3261E−01 6.2236E−01 −9.5592E−01 1.0101E+00 R95.2818E−01 −3.1826E−02 8.9259E−04 1.1344E−03 2.3040E−04 R10 −4.0002E+02−7.6908E−02 6.8470E−03 9.8967E−04 −6.2621E−04 R11 −3.7677E+02−3.4474E−01 1.9690E−01 −5.5348E−02 7.9880E−03 R12 −1.7267E+01−1.5416E−01 6.7063E−02 −1.7901E−02 2.6076E−03 Aspherical surfacecoefficients A12 A14 A16 A18 A20 R1 −5.7488E−01 6.3078E+00 −9.3542E+005.9655E+00 −1.4602E+00 R2 −1.1992E+00 −4.3791E−01 8.4196E−01 6.8712E−01−6.2640E−01 R3 −3.8536E+00 1.9886E+01 −3.7207E+01 3.3178E+01 −1.1421E+01R4 −6.0085E+00 5.2933E+01 −1.1506E+02 1.1337E+02 −4.2664E+01 R52.4300E+01 −1.4101E+01 −3.2336E+01 5.9860E+01 −2.9560E+01 R6 5.6220E−013.3759E−01 −5.1632E−01 1.2660E−01 1.6535E−02 R7 −2.2284E−02 −2.5591E−028.8519E−03 1.1936E−02 −4.5133E−03 R8 −5.0617E−01 −8.7864E−03 1.2170E−01−4.8529E−02 6.2153E−03 R9 2.8972E−06 −1.2517E−05 −3.7521E−06 −3.9736E−087.4430E−07 R10 −1.2614E−04 1.3166E−05 8.9659E−06 1.4896E−06 −3.7309E−07R11 −8.2015E−05 −2.0184E−04 3.9756E−05 −3.4588E−06 1.1838E−07 R12−8.1230E−05 −3.5957E−05 3.8037E−06 2.4944E−07 −3.7110E−08

Table 15 and Table 16 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 40 according toEmbodiment 4 of the present disclosure.

TABLE 15 Number of Inflexion Inflexion Inflexion inflexion point pointpoint points position 1 position 2 position 3 P1R1 1 0.805 P1R2 1 0.345P2R1 1 0.435 P2R2 P3R1 1 0.275 P3R2 3 0.325 0.925 0.995 P4R1 1 1.205P4R2 3 0.845 1.105 1.445 P5R1 1 1.565 P5R2 1 1.815 P6R1 3 0.175 1.2652.385 P6R2 3 0.385 2.215 2.515

TABLE 16 Number Arrest Arrest of arrest point point points position 1position 2 P1R1 P1R2 1 0.665 P2R1 1 0.575 P2R2 P3R1 1 0.475 P3R2 1 0.555P4R1 P4R2 P5R1 P5R2 P6R1 2 0.315 2.205 P6R2 1 0.825

In addition, Table 17 below further lists various values of Embodiment 2and values corresponding to parameters which are specified in the aboveconditions.

FIG. 14 illustrates a longitudinal aberration of light with wavelengthsof 435 nm, 486 nm, 546 nm, 587 nm and 656 nm after passing the cameraoptical lens 40 according to Embodiment 4, and FIG. 15 illustrates alateral color of light with wavelengths of 435 nm, 486 nm, 546 nm, 587nm and 656 nm after passing the camera optical lens 40 according toEmbodiment 4. FIG. 16 illustrates a field curvature and a distortion oflight with a wavelength of 546 nm after passing the camera optical lens40 according to Embodiment 4, in which a field curvature S is a fieldcurvature in a sagittal direction and T is a field curvature in atangential direction.

In the camera optical lens 40 according to this embodiment, 2ω=84.16°and Fno=2.00. Thus, the camera optical lens 40 can achieve a highimaging performance while satisfying design requirements for wide-angleand ultra-thin lenses having a big aperture.

Table 17 below lists various values of Embodiments 1, 2, 3 and 4 andvalues corresponding to parameters which are specified in the aboveconditions (1), (2), (3), (4) and (5) and values of relevant parameters.

TABLE 17 Embodiment Embodiment Embodiment Embodiment 1 2 3 4 Notes n4/n11.13 1.10 1.30 1.13 Condition (1) (R1+R2)/(R1−R2) −1.99 −1.99 −1.51−1.97 Condition (2) (R5+R6)/(R5−R6) 41.70 49.75 30.59 45.10 Condition(3) d6/d8 1.28 1.11 1.39 1.36 Condition (4) f5/f −2.13 −2.11 −2.99 −1.52Condition (5) Fno 2.00 2.00 2.00 2.00 2. 84.29 84.22 84.79 84.16 f 3.4863.513 3.492 3.514 f1 3.067 3.069 2.662 3.073 f2 −11.891 −12.089 −9.973−12.498 f3 −247.888 −343.520 −179.520 −291.179 f4 3.846 4.154 73.6763.592 f5 −7.442 −7.425 −10.425 −5.339 f6 −4.184 −4.418 −19.234 −4.233TTL 4.031 4.030 4.065 4.017 IH 3.282 3.282 3.282 3.282

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the spirit and scope of the present disclosure

What is claimed is:
 1. A camera optical lens, comprising, from an objectside to an image side: an aperture; a first lens having a positiverefractive power; a second lens having a negative refractive power; athird lens having a negative refractive power; a fourth lens having apositive refractive power; a fifth lens having a negative refractivepower; and a sixth lens having a negative refractive power, wherein thecamera optical lens satisfies following conditions:1.09≤n4/n1≤1.30; and−2.00≤(R1+R2)/(R1−R2)≤−1.50, where n1 denotes a refractive index of thefirst lens; n4 denotes a refractive index of the fourth lens; R1 denotesa curvature radius of an object side surface of the first lens; and R2denotes a curvature radius of an image side surface of the first lens.2. The camera optical lens as described in claim 1, further satisfying afollowing condition:30.00≤(R5+R6)/(R5−R6)≤50.00, where R5 denotes a curvature radius of anobject side surface of the third lens; and R6 denotes a curvature radiusof an image side surface of the third lens.
 3. The camera optical lensas described in claim 1, further satisfying a following condition:1.10≤d6/d8≤1.40, where d6 denotes on-axis distance from an image sidesurface of the third lens to an object side surface of the fourth lens;and d8 denotes on-axis distance from an image side surface of the fourthlens to an object side surface of the fifth lens.
 4. The camera opticallens as described in claim 1, further satisfying a following condition:−3.00≤f5/f≤−1.50, where f denotes a focal length of the camera opticallens; and f5 denotes a focal length of the fifth lens.